PRODUCT FEATURES
3Pc Weld Ball Valve — Product Features
“A three-piece welded manual ball valve that can be disassembled into three components, offering threaded connection options, a variety of material choices, and PTFE seals. Please refer to the enclosed technical specifications for details.
Three-piece welded valve body
A male-threaded ball valve designed for manual on/off operation in piping systems.
Manual Ball Valve Operation
Turning the handle rotates the valve stem and ball together, thereby opening or closing the flow path.
Connection Type
Welded; please confirm the required dimensions and specifications.
Material and Seat Options
The parts list includes WCB / CF8 / CF8M / 2205 body materials and PTFE seat components.”
OPERATING PRINCIPLE
How 3Pc Weld Ball Valve Works
“A gentle turn is all it takes to control fluid flow. Turning the handle causes the valve stem and the ball to rotate in unison.
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1. Turn the handle
The manual handle transmits rotational motion to the valve stem.
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2. Rotate the ball
The valve stem drives the ball, thereby changing the direction of the flow path.
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3. Open or close
When the ball’s orifice aligns with the flow path, fluid flows through; when the ball is rotated to block the flow path, the valve closes.”
ENGINEERING DATA
Technical Specifications
Technical data supplied for 3PC Weld BALL VALVE. Ratings and material combinations should be confirmed for the selected configuration.
| PARAMETER | SPECIFICATION |
|---|---|
| Product Type | Manual Three-Piece Threaded Ball Valve |
| Size Range | 1/2“–4” (DN15–DN100) |
| Thread Specifications | BSPT / BSPP / NPT |
| Body Material | WCB/CF8 / CF8M/2205 |
| Working Pressure | 1.6/2.5 MPa |
| Working Temperature | 0°C to 120°C |
| Design and Manufacture | ASME B16.34 |
| Inspection and Testing | API 598 |
| Body/Shell Test Pressure | 1.6 MPa |
| Seat Seal Test Pressure | 1.6 MPa |
| Air Tightness Test Pressure | 1.2 MPa |
MECHANICAL DIMENSIONS
Dimensions & drawings.
Compare connection size with the corresponding overall length, bore and handle clearance dimensions from the supplied drawing.
Dimension chart
| SIZE | DN | L | H | d | D1 | W |
|---|---|---|---|---|---|---|
| 1/2 | DN15 | 64 | 72 | 17 | 21 | 110 |
| 3/4 | DN20 | 74 | 78 | 21 | 27 | 110 |
| 1 | DN25 | 88 | 92 | 28 | 33 | 127 |
| 1-1/4 | DN32 | 97 | 109 | 34 | 41 | 150 |
| 1-1/2 | DN40 | 110 | 125 | 40 | 47 | 161 |
| 2 | DN50 | 131 | 139 | 52 | 60 | 172 |
Refer to the supplied dimension chart.
COMPONENT BREAKDOWN
Parts & Materials
Component names and materials from the supplied product parts list.
| NO. | PART | MATERIAL |
|---|---|---|
| 01 | Body | CF8 / CF8M |
| 02 | Bonnet | CF8 / CF8M |
| 03 | Ball | CF8 / CF8M |
| 04 | Seat | SS304 / SS316 |
| 05 | Bolt | SS201/SS304/SS316L |
| 06 | Spring Washer | SS304 / SS316L |
| 07 | Stem | SS304 / SS316L |
| 08 | Nut | SS304 |
| 09 | Stem Washer | PTFE |
| 10 | Packing | PTFE |
| 11 | Gland | SS316L / SS304 |
| 12 | Disc Spring | SS304 / SS316L |
| 13 | Nut | SS201/SS304/SS316L |
| 14 | Crown Washer | SS304 |
| 15 | Screw | SS304 |
| 16 | Handle | SS+PVC |
| 17 | Hex Socket Bolt | SS201/SS304/SS316L |
| 18 | Nut | SS201/SS304/SS316L |
APPLICATIONS
Applications
Applicable media: the supplied document lists the following fluids. Actual compatibility depends on selected materials, concentration, temperature, pressure and the specific service conditions.
Application – Water Circulation
Cooling water, circulating water, drinking water and neutral purified water.
Application – Steam Piping
Clean, low-temperature saturated steam, subject to the product’s confirmed temperature and pressure limits.
Application – Compressed Air
Compressed air and nitrogen; verify compatibility for each system.
PURCHASING SUPPORT
Frequently Asked Questions
Find answers to common questions about sizing, materials, threaded connections and operating conditions.
What is 3PC butt Weld Ball Valve?
3PC butt weld ball valve consists of three body parts with butt weld ends. It is welded directly to pipeline, zero thread leakage risk. Inline maintenance without removing whole valve.
What is the main difference between 3PC ball valve and 2PC /1PC ball valve?
1PC: One piece body, reduced port, low cost, low pressure, cannot disassemble.
2PC: Two pieces body, full port, general use, need to remove whole valve for maintenance.
3PC: Three pieces body, full port, robust structure, inline maintenance, higher pressure, longer service life.
Pressure rating?
1000WOG (PN16), working pressure up to 16bar at room temperature.1000WOG (PN16)
Working temperature range?
PTFE seat: 0℃ ~ 120℃. If over 120℃, we can offer other seat material.
What media can it handle?
Water, compressed air, natural gas, oil, weak acid & alkali. Not for strong corrosive medium.
Is it full port or reduced port?
Standard 2PC ball valve is full port, low flow resistance.
Can it be used for steam?
For saturated steam, please advise temperature and pressure. PTFE seat is limited for high temp steam.
Do you do 100% pressure test?
Yes. Every valve will pass air leakage test before packing.
MOQ?
Small MOQ available. Mixed sizes in one order acceptable.
Packing method?
Each valve in plastic bag, then small box, carton outside. Wooden pallet optional.
Can I put my own logo /custom label?
Yes, OEM & ODM available. Logo on handle or body.
Is it bidirectional sealing?
Yes, floating ball design, bidirectional sealing.
Welding tips?
Protect valve seat and ball during welding. Do not overheat the valve body, high temperature will damage PTFE seat. Release pipeline pressure before disassembly.
Can the valve be installed vertically or horizontally?
Both horizontal and vertical installation are okay. Handle can be adjusted position.
What’s the warranty?
12 months warranty against manufacturing defect. Not cover damage from wrong operation.
How to prevent leakage?
Do not over-tighten thread when installation; avoid impact. Regular inspection for long time service.
“What sizes are available?
The general product specifications list sizes from 1/2” to 2” (DN15–DN50). The accompanying size chart currently covers DN15–DN50; please verify the specific dimensions for the size you require.
What materials can I choose from?
The original bill of materials includes 201, CF8, and CF8M valve body options, as well as a variety of ball and internal component materials. Specific configuration combinations should be confirmed prior to ordering.
What are the temperature and pressure limits?
The accompanying general data indicates an operating pressure of 1.6 MPa and an operating temperature range of 0°C to 120°C. Suitability of this product for specific fluids and temperatures must be confirmed separately.
Can this valve be used for throttling?
The accompanying operating instructions recommend against leaving the valve in a partially open position for extended periods, as high-velocity fluid may erode the PTFE seat.
What is the lead time for orders?
We maintain a stock of 5,000 BSPT valves for standard orders; other thread types require customization, with a production capacity of 50,000 units within 15 days.
What is the product quality like? Is there a warranty period?
Every valve undergoes rigorous quality inspection, including testing of the material, threads, seals, and valve body, and is backed by a one-year warranty within the normal operating range of the medium.”””
3PC Weld BALL VALVE
"Product Type: Manual Three-Piece Welded Ball Valve
Size Range: 1/2“–4” (DN15–DN100)
Thread Specification: Weld
Body Material: WCB/CF8/CF8M/2205
Working Pressure: 1.6/2.5 MPa
Working Temperature: 0°C to 120°C
Design and Manufacture: ASME B16.34
Inspection and Testing: API 598
Body/Shell Test Pressure: 1.6 MPa
Seat Seal Test Pressure: 1.6 MPa
Air Tightness Test Pressure: 1.2 MPa"
